<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list"
            v-for="(good,index) in cartInfoList"
            :key="good.id">
          <li class="cart-list-con1">
            <input type="checkbox"
                   name="chk_list"
                   @change="updateGoodChecked($event,good)"
                   :checked='good.isChecked==1'>
          </li>
          <li class="cart-list-con2">
            <img :src="good.imgUrl">
            <div class="item-msg">{{good.skuName}}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{good.cartPrice || '0'}}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)"
               class="mins"
               @click="handler('mins',good,-1)">-</a>
            <input autocomplete="off"
                   type="text"
                   :value="good.skuNum"
                   minnum="1"
                   class="itxt"
                   @change="handler('change',good,$event.target.value*1,oldNum)">
            <a href="javascript:void(0)"
               class="plus"
               @click="handler('plus',good,1)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{good.cartPrice * good.skuNum}}</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none"
               class="sindelet"
               @click="delCarGoods(good)">删除</a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul>

      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll"
               type="checkbox"
               :checked="isAllChecked && cartInfoList.length >0"
               @change="changAllchecked($event)">
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none"
           @click="delAllCheckGoods">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>0</span>件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{totalPrice}}</i>
        </div>
        <div class="sumbtn">
          <a class="sum-btn"
             target="_blank"
             @click="$router.push('/trade')">结算</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import throttle from 'lodash/throttle'
import { mapGetters } from 'vuex'
export default {
  name: 'ShopCart',
  mounted () {
    this.getData()
  },
  computed: {
    ...mapGetters('shopCard', ['cartInfoList']),
    //计算总价
    totalPrice () {
      let sum = 0
      this.cartInfoList.forEach(good => {
        sum += good.cartPrice * good.skuNum
      });
      return sum
    },
    //判断全选按钮是否勾选
    isAllChecked () {
      return this.cartInfoList.every(good => good.isChecked == 1)
    }
  },
  methods: {
    //获取个人购物车数据
    getData () {
      this.$store.dispatch('shopCard/getCardList')
    },

    //节流避免出现点击过快出现负数   修改商品数量
    handler: throttle(async function (type, good, num) {
      console.log("节流验证")
      if (type == 'change') {
        if (isNaN(num) || num < 1) {
          //排除非数字和负数
          num = 0
        } else {
          //取整
          num = parseInt(num) - good.skuNum
        }
      }
      if (type == 'mins') {
        num = good.skuNum > 1 ? -1 : 0
      }
      let result = await this.$store.dispatch('detail/addShopCar', { skuId: good.skuId, skuNum: num })
      if (result == 'OK') {
        this.$store.dispatch('shopCard/getCardList')
      }
    }, 1000),
    //删除商品
    async delCarGoods (good) {
      let result = await this.$store.dispatch('shopCard/delCarGoods', good.skuId)
      if (result == 'OK') {
        this.getData()
      }
    },
    //更新商品选中状态
    async updateGoodChecked (e, good) {
      try {
        let status = e.target.checked ? '1' : '0'
        let result = await this.$store.dispatch('shopCard/updateGoodsChecked', { skuId: good.skuId, isChecked: status })
        if (result == 'OK') {
          this.getData()
        }
      } catch (error) {
        console.log(error)
      }
    },
    //删除选中的全部商品
    async delAllCheckGoods () {
      try {
        await this.$store.dispatch('shopCard/delAllCheckedGoods')
        this.getData()
      } catch (error) {
        alert(error.message)
      }
    },
    //全部产品的勾选状态
    async changAllchecked (e) {
      try {
        let status = 0
        if (e.target.checked) {
          status = 1
        } else {
          status = 0
        }
        await this.$store.dispatch('shopCard/changAllchecked', status)
        this.getData()
      } catch (error) {
        alert(error.message)
      }
    }
  },
}
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 10%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 15%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 12%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 12.5%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>